FLUChallenge: an innovative strategy to increase flu vaccination in two Italian Teaching Hospitals

In Europe flu vaccination among healthcare workers (HCWs) is strongly recommended even though not mandatory such as elsewhere (USA). Despite this, vaccination coverage in EU countries is usually low: 30.2% in 2016-17. In Italy, at the end of the same season it was 15.6%. Aim of this study is to describe and evaluate the new strategy adopted by Gemelli and Humanitas Research Hospitals, two Italian Teaching Hospitals (THs) part of the MIRO Public Health Center, to increase the vaccination coverage among their HCWs. Before the 2019-20 campaign, experts of the two THs met up to identify a common strategy to promote flu vaccination among HCWs in addition to the ones already implemented. It was decided to launch a FLUChallenge: a platform of monitoring updated bi-weekly and available on the THs' internal websites with the vaccination coverage overall and stratified by job category and macro-areas of activity. Descriptive and inferential analysis were performed. Preliminary Results 6673 HCWs included (4241 Gemelli, 2432 Humanitas). The overall flu vaccination coverage at the end of the 2019-20 campaign was 28.4% (1026 HCWs vaccinated Gemelli, equal to 24.2%; 869 HCWs vaccinated Humanitas, 35.7%). Both THs significantly increased the vaccination coverage compared to the previous year (+10% Gemelli, 22% in 2018-19, p = 0.01; +45.7% Humanitas, 24.5% in 2018-19, p < 0.001). Physicians had the highest coverage both in Gemelli (483/1320, 36.6%) and Humanitas (443/979, 45.2%), while the lowest was registered among nurses in Gemelli (357/2017, 17.7%) and other HCWs in Humanitas (134/605, 22.1%). Infectious disease was the macro-area with highest coverage in Gemelli (32.3%), while in Humanitas the emergency department (63.9%). The FLUChallenge intervention was an effective strategy to increase flu vaccination coverage in the two TH. The website platform was useful for the purpose of accountability and able to create a positive challenge between the HCWs working in the two THs involved. Key messages Flu vaccination among healthcare workers (HCWs) is recommended to prevent influenza and to avoid its transmission. It is important to promote new engagement and innovative strategies to increase flu vaccination coverage among HCWs, when it is not mandatory.